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How many? English language journals only (4,032 2,838) 90% of publishers <100 articles/year and 1/3 of total 10% of publishers publish 2/3 of the total b) Hybrid: 22% of journals, 2% of articles within hybrids 3Ralf Schimmer | MPSSOAP Symposium a) Fully Open Access

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How many? 4 About 8-10% of articles/year are published in fully and hybrid OA journals Ralf Schimmer | MPSSOAP Symposium

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11 Impact indicators Ralf Schimmer | MPSSOAP Symposium Of our 2,838 OA journals, 313 (11%) are referenced in ISI-JCR (2008), while 1,176 (41%) can be found in Scopus (2009) No difference between the large and other publishers in being listed in ISI-JCR But distinct relationship between impact factor and subject domain; only 19 SSH journals with less than 500 articles per year appear in ISI-JCR

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13 Summary OA publishing is a mature field with similar patterns and quality indicators as non-OA publishing Stronger presence of OA publishing in STM fields Large publishers are more likely to rely on APC Both large and smaller publishers are equally likely to have journals with an impact factor Large publishers mostly use a version of Creative Commons licensing while several smaller publishers request the transfer of copyright to the publisher Ralf Schimmer | MPSSOAP Symposium